<template>
    <div class="login_container">

        <div class="login_box">
            <!--        头像区域-->
            <div class="avatar_box">
                <img src="../assets/logo.png" alt="">
            </div>
            <!--        表单区域-->
            <el-form ref="loginFormRef" :model="loginForm" :rules="rules" label-width="0px" class="login_form">
<!--                用户名-->
                <el-form-item prop="username">
                    <el-input v-model="loginForm.username" prefix-icon="el-icon-user-solid
"></el-input>
                </el-form-item>

<!--                密码-->
                <el-form-item prop="password">
                    <el-input  type="password" v-model="loginForm.password" prefix-icon="el-icon-s-goods
"></el-input>
                </el-form-item>

<!--                按钮区域-->
                <el-form-item class="btns">
                    <el-button type="primary" @click="login">登录</el-button>
                    <el-button type="info" @click="resetLoginForm">重置</el-button>
                </el-form-item>
            </el-form>
        </div>

    </div>
</template>

<script>
    export default {
        name: "Login",
        data() {
            return {
                loginForm: {
                    username: 'admin',
                    password: '123456'
                },
                rules: {
                    //验证用户名是否合法
                    username: [
                        { required: true, message: '请输入用户名', trigger: 'blur' },
                        { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
                    ],
                    //验证密码是否合法
                    password: [
                        { required: true, message: '请输入密码', trigger: 'blur' },
                        { min: 6, max: 10, message: '长度在 6 到 10 个字符', trigger: 'blur' }
                    ]
            }
            }
        },
        methods: {
            //重置按钮
            resetLoginForm() {
                this.$refs.loginFormRef.resetFields();
            },
            login() {
                //表单预验证
                this.$refs.loginFormRef.validate(async valid => {
                    if (!valid) return;
                    //向服务器发送请求，获取返回值
                    const {data: res} = await this.$http.post('login',this.loginForm);
                    if(res.meta.status!=200) return this.$message.error('登陆失败')
                    this.$message.success('登陆成功！')
                    //打印data信息
                    // console.log(res.data.token);
                    //将token保存到sessionStorage
                    window.sessionStorage.setItem("token",res.data.token);
                    //跳转到后台主页，路由地址是/home
                    this.$router.push('/home');
                })
            }
        }
    }
</script>

<style lang="less" scoped>
.login_container {
    height: 100%;
    background-color: #2b4b6b;
}
.login_box {
    width: 450px;
    height: 300px;
    background-color: antiquewhite;
    border-radius: 3px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%,-50%);
}
.avatar_box {
    height: 130px;
    width: 130px;
    border: 1px solid silver;
    border-radius: 50%;
    padding: 5px;
    box-shadow: 0 0 10px #ddd;
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: antiquewhite;
    img {
        width: 100%;
        height: 100%;
        border-radius: 50%;
        background-color: cadetblue;
    }
}
.btns {
    display: flex;
    justify-content: flex-end;

}
.login_form {
    position: absolute;
    bottom: 0;
    width: 100%;
    padding: 0 20px;
    box-sizing: border-box;
}
</style>